
#include <iostream>
#include <string>
#include <vector>



using namespace std;



vector<int> mul(vector<int>& A, int b)
{
	vector<int> C;
	int t = 0;
	for (int i = 0; i < A.size() || t; i++)
	{
		if (i < A.size())t += A[i] * b;
		C.push_back(t % 10);
		t /= 10;
	}
	while(C.size()>1&&C.back()==0)C.pop_back();
	return C;
}

int main()
{
	string B;
	int b;
	cin >> B >> b;
	vector<int> A;
	for (int i = B.size() - 1; i >= 0; i--)
	{
		A.push_back(B[i] - '0');
	}

	auto C = mul(A, b);
	for (int i = C.size() - 1; i >= 0; i--)
		cout << C[i];



	return 0;
}
